Valve



Patented Nov. 6, 1,951

V"ALVE I Wylie G. Wilsoiny Elizabeth; Ng J.'-, .-assgnor.to `lEve:lastima- Yalvc Company, Jersey City, N. J., ,a corporation of `New Jersey 11 Application October 1, 1945,:Seral No.' 619,640

,1 1 Y This invention. relates tofvalves.- It is particularly applicable to valves of :the type knOWneS plus cocks; and in some. respects `it san improvernent on the valve Vdisclosed in my reissue Patent No. 22,455, dated March 1A, 1944.

An object of the :present invention is to provide a valve structurewith improved operating mechanism ofthe type in which continuous movement of an operating member in one direction lifts the valve element from its seat,fthen rotates the valve element to a desired open. or-closed position, and then -reseats the-valve element.

A particular object ofthe invention lis-.to provide a valve of the foregoingcharacter which provides for reseating of the .valve-element in any rotative position thereof.

Another object ofthe'invention is vto provide valvecperating mechanism Qf the foregoing-character which lifts the valvefelementfrom -its' seat without rotary movementthereof, which lrestores the valve element to its seatwithout rotary movement thereof during the restoring movement, and which provides-for seating of the valve-element inpartially openfpositions. j y

A further object ofthe invention `is to provide a valve structure of the foregoing .character which includes means whereby the .position of the plug or other valve element inthe `valve casing can lbe adjusted to compensate for wear or other condition andrbe securely locked iii-adjusted position without change of-adjustment during the act of locking. y

Further objects, and objects relating to details and economies of construction and vuse vvvill more denitelv appear Yfrorrithe detailed description to follow. t

The valve disclosed includes a: casing and a tapered plug thereinfwhichplug has a-through opening adapted tofbe aligned with openings in the valve casing. In the drawings Athewplug is illustrated'as having anStem--passingthrough a.

sleeve in such fashion that the stem is` held againstaxial movement relative tothes1eeve,but may be rotated relative to the sleeve. Thigsleeve is threaded lintoa 'second sleeve rotatably secu/.red

into asupporting-v-part of the valve framework. Rotation of the `irst sleeve in one direction will cause axial movement of: the stem in one-direction While rotation of the same sleeve inthg'opposite direction will cause vreverseaxial movement of the stem. Rotativo-adjustment of the secondsleeve eects axial adjustment of-fthesnrst sleeve, and consequently of the-stem and plus.

" `JEtotar-y movement -ofithe lli-rst :sleeve isfaecm= lishedthrough4 theasencyf of el fconnectinsrrodr Y 3 Claims, (Cl.2,51==97) Y 2 one yend Qiwheh is attached to an arm extending eutwardlvirom the sleevaand the .other endf'of which ,is attashedfto a crank Y'member-f vThis crank member is mounted on an operatingshaft forever-center movement thereby, so thatrota-v tOIr of the shafty in one direction causes rotation of the sleeve, virst inone direction and then in the lOpposite' direction. 1n conjunction withthe connecting: rod arrangement -just'described,- the operatingishaft is provided With a mutilated gear on' sector vwhich coopera-tes with a gear sector mounted on the valvesm. The various. parte area-so relatedfthatuponfrotationof the operating shaft in asingle '.direction, the valve-elementis first-liftedtrom itsfseat, thenrotated. and. then reseated. Y

'The l .mecha/I.lSrnl fadditienally inch-idee` an :adjustable lostemotion connection between; the gear sector .and the valve stemgwherebyfthe degree of rotation .etti- 1e stem occasioned-by complete move--v ment of-.the operatingsha-,ft in a single direction m'ay=befentrolled.'f v'Thus the-.invention provides j for par-tial lopening yof y the y valve to rthe extent that may'be'desired, while-at the same time providing for seating of the valve element at thefzendrof movement of =the` .operating `shaft regardless 1' of the degree of opening ofthe valve. .'Fig. 1 is avertical :section of aivalve Vstructure embodying the invention. Fig. 2f isan elevationof the'same structure, viewed from theright of Fig. 1.

V:Eiga is -a diagram lshowingthe relative positions orner-tain `parts of' the valve operating mechanism during the Vcycle ofoperation thereof. Figs 4-to18 arelargelydiagrammatic plan views illustrating successive increments of movement of Some of the-'operating parts of the mechanism during* a complete cycle of' operation thereof. Referring. .particularly to Figs. 1 and 2 of the drawings, V`|0--indicates generally the bodyf of a valve: ofthe-plug cocktype.' VThis body has threadedopenings I.-.I and' l2 to receive .pipes :for the'passage of fluid `to-becontrolled by thevalve. The body of thevalve so shaped and ground interiorlyaas to provide arseat for a tapered plug member ld--Whichhas aport l5 therein of :size andshapeto match lthe-'ports I 5a, I5a in the valve body. ln addition', the .flower end` of the plug may bei-'provided' with a stubstem member IB journalled in a bearing recess I1 in the valve body f 'o'r rthe lpurpose of aiding in centering thelplug, but thismay bef-omitted if desired. Acover or bonnet 'I8 is secured inany suitable vWay 'to .the val-ve boelmtwit-hv an interposed gasket cover isfzcentrally; apertured fior. the .passage of a valve stem 2U. A stuffing box for the reception of packing 2| is provided in the cover and a packing compressor 22 is pressed into the box in a usual manner.

Secured to the cover i8 by means of shouldered studs 24 is a plate 25 utilized in supporting the mechanism for operating the valve. Above the packing compressor 22 the valve stem 20 is provided with successive portions 20a, 20h and 20c of successively reduced diameter. The successive reductions in stem diameter form shoulders at S, S and S". A sleeve 26 embraces stem portion 20a. Mounted on stem portion 20h is a gear 4 51 (see also Figs. 4 8) adjacent the ends of the teeth 55, which locking formations engage the lower periphery or disc 58 of the pinion 50 to hold gear member 21 against rotation when teeth 54 and 55 are out of mesh. The disc 58 is spaced axially from the teeth 55 to prevent contact between these parts when the gear 21 moves axially.

Gear sector 21, which is not-keyed to valve stem 2B, may move through an angle of approximately 90 under the action of gear sector 56.

4`On the upper face of gear sector 21 are two integral upstanding lugs 35 and 36.

sector 21 and elements 2117 and 21a, which will be referred to later. Stem portion 20c is threaded and is provided as shown with a nut which holds a washer rmly against the stem shoulder at S. The parts are so proportioned that sleeve 26, gear sector 21 and elements 21b and 21a are conned against axial movement on the valve stem without binding or clamping action between them.

The sleeve 26 is externally threaded as at 29 to coact with internal threads of a second or adjusting sleeve 36, which second sleevel is rotatable in an aperture in the plate 25. Sleeve 30 is held against axial movement in plate 25 by a bearing shoulder 30 and alretainng nut 30". The upper end of the adjusting sleeve is provided with a flange in which teeth 3| are cut. Cooperable with the teeth 3| is a dog 32 mounted on a pivot stud 34 secured to the plate 25. This dog is adapted to be moved into engagement with the teeth 3| to lock the adjusting sleeve 30 in any rotative position. This structure is more fully shown and described in my reissue patent No. 22,455, hereinbefore mentioned. By means of the'adjusting sleeve 3U, the plug I4 may be conveniently seated withthe desired degree of pressure, when the valve is initially assembled and yalso if readjustment becomes desirable due to wear. After such, an adjustment the dog 32 is moved into its locking position between teeth 3| vand secured by a cotter pin, as disclosed in Rec 22,455, to prevent fortuitous rotation Vof sleeve 30.

The sleeve 26 is provided with two outwardly extending lugs 4|, 4| (Fig. 2) through which extend a pin 42 that secures one end of a connecting rod 44 to the sleeve. The lugs 4|, 4| are spaced apart a distance greater than the thickness of the connecting rod so that, as the sleeve 26) rotates with combined axial movement, relative sliding movement between the connecting rod (which does not move axially of the valve stem 29) and the pin 42 is permitted. The other end of the connecting rod 44 has a crank pin 45 extending therethrough and the connecting rod is retained on the crank pin by a split cotter pin 46. The crank pin 45 is fastened to a crank disc 41 on the lower end of an operating shaft 48 which is journalled in a bearing 49 formed as part of the plate 25. The upper end of the operating shaft 48 has a mutilated gear, or gear sector, 50 keyed thereon and held against axial movement by a handle which is fast on shaft 48 and retained by a nut 52 threaded onto the upper end of the shaft 48. Both the handle 5| and the gear sector 50 are so secured to the operating shaft 48 that these parts must rotate as a unit.

The gear sector or pinion 56 has teeth 54 formed thereon as shown in Fig. 2 and such teeth extend through an arc of somewhat less than 90. The gear member 21 on the stem 20 has teeth 55 extending through a sector of nearly 90. The member 21 also has locking formations 5.5 all@ Extending downwardly into the path of movement of lug l36, as it moves with gear sector 21, is a lug 31 (see particularly Fig. 1) on element 21a which is keyed on the upper end of stem 28. Between gear sector Z'Iand element 21a is the floating member 2112, which has a lug 38 which extends into the path of movement of lug 35 on gear sector 21. Element 21h also has a lug 39 which extends upwardly into the path4 of adjusting screw 4l] carried by element 21a. These elements constitute anv adjustable lost-motion connection between gear sector 21 and element 21a which is keyed to valve stem 20. rIhe operation of this structure is illustrated in YFigs 4 to 8 inclusive.

Fig. 4 illustrates Athe position of pinion member 59 and its cooperating-gear sector 21 when the valve is closed, the arrow indicating the direction of movement on moving the handle 5| and the operating shaft 48 to open the valve. Fig. 5 shows the position of pinion member 59 at'the beginning of its action on gear sector 21.

Further motion will cause rotation of gear sector 21, and its upstanding lug 35 will immediately contact lug 38 on oating element 21D, causing that element also' to rotate. In Fig. 6 is shown the 'position when upstanding lug 39 on floating element 21h has come into contact with adjustable screw 46 carried by element 21a. Continued rotation will cause lug 39 to push screw 4t and thereby rotate element 21a to the position shown in Fig. '1. In this position the gear sectors 5|) and 21 disengage, and locking shoulder 51 comes into engagement with disc 58 on the pinion member 50. Thereafter pinion member 50 may continue to rotate, but gear sector 21 and all its associated parts will remain stationary with the valve open to the extent determined by the adjustment of set screw 46. Further movement of the handle 5| and the operating shaft 48 in the same direction will have an effect to be hereafter described, which will not involve further rotation of the valve plug |4.

It being understood that Fig. 8 shows the position of the valve operating mechanism whenV the valve is open tothe extent determined by the setting of screw 46,' movement of the operating shaft 48, in the'direction opposite yto that shown: by the arrows, will have no eiect in rotating gear sector 21 until the pinion member' 59 has reached the position shown in Fig. '7. Further reverse movement ofthe operating lshaft will initiate reverse rotation 0f gear sector 21. As soon as upstanding'lug 36 contacts depending lug 31 the element 21a will be rotated and will in turn rotate valve stem 26 until it reaches the position shown in Fig. 5. In this position the teeth of the pinion member 59 become disengaged from gear sector' 21, leaving gear sector 21 locked against rotation by shoulder 56, the plug I4 nov.7 being in closed position.

Referring now to Fig. 3, the arc A represents the path of movement ofthe center of the pin 42 to which one end of 'the connecting rod 44 is acuoso pivotally secured.. The point1B--representsithe axis of the. valve stem 22mg and the point `Groote sents the vposi-tion fof; the .axis Vof pn'42 when the-.valveis closed yand the'plug is seated. The points D andE represent points .in the traveler the axis of pinz42. "The .point .F-frepresentsfthe axis fof ,the operatingxshaft 48, while the points G,"H, I,l J 'and K represent points :inV the travel ofthe axis of the crank pin-45. Thelines (3f- Gr D-I-I, E-;-I, D.-J:,.and C-i-K represent the connection bet-Ween the pins`42 and;45, ie., the .connecting rod 44 in various positions.

Assuming `that the valve is closed, in. Lwhich condition the plug is seated, a cycle ofoperation toopenfthe Avalve requires .a movementorthe operating handle I through approximately2'7'0, from. point" G to. pointe During the rst 90 ofiv movement of the` operating handle` 'the crank pin 45.' moves from G -to H. This moves the sleeve pin 42 along thearc from C to D, with corresponding rotation of the sleeve .26.1 Such rotation of the sleevein'the stationary sleeve imparts relatively rapid Yaxial movementto the valve s tem 25 to quickly lift the plug I4 from itsseat. H to I (dead center) moves the sleeve pin- 42only from Dto E, .whichimparts only a slight additional increment of lifting movement to plug I4. Continued movement of crank pin 45 from I to J causes areverse movementv ofthe-.sleeve pin-42 from E to D, which slightly depresses--thepmg Iii. During the Vlast. 90. vof movement of. the crank pin` 45, from J to K, the sleeve Din 42 is moved from D to C and the plug I4 quickly. reseated... .During Athe .second :909er movement .of the .crank pin .45, from..I-I to J, .rotationo the valvenstem 20 iswefectednto. open. the -.valve,..as will now be described.

Bearing in mind the schematic showing of Fig. 3, reference will now be made to Figs. 4 to 8 inclusive, Which figures illustrate ve positions of the operating mechanism during the movement of the valve from closed position to open position. In Fig. 4 the connecting rod 44 is in the position corresponding to line C-G in Fig. 3. In this position the teeth 54 of the pinion 50 are out of mesh with the teeth 55 of the gear21, and this latter gear is locked against rotation by contact between the formation 56 and the disc 58 of the pinion member 50.

When the operating handle or lever 5| has moved through the initial 90 of movement, the parts assume the Fig, 5 position, in Which the teeth 54 of the pinion are just coming intomesh with the teeth 55 of the gear 21. In this Fig. 5 position the connecting rod 44 is in the position corresponding to line D-H in Fig. 3, and the plug I4 has been lifted from its seat. In the Fig. 6 position the connecting rod 44 is in the position corresponding to line E-I in Fig. 3. In moving from the Fig. 5 to the Fig. 6 position, little additional lifting of the plug has taken place, but gear 21 has been rotated approximately 45. In the Fig. 7 position the connecting rod 44 is in the position corresponding to line D-J of Fig. 3. In moving from the Fig. 6 to the Fig. '1 position, the plug has been depressed slightly and the gear 21 has been rotated a further increment of about 45. In the Fig. 8 position the connecting rod 44 is in the position corresponding to line C-K of Fig. 3. In moving from the Fig. 7 to the Fig 8 position, no additional rotation has been imparted to gear 21, but the plug I4 has been reseated.

Thus it Will be seen that the valve. opening l'oveme'ntfofY the crank pin '45 from 'Y avalemayy be :consideradas --being composed :of four-'.'stepsr During the iirst stepv (Fig. 4 tov Fig. 5) gearl is held against rotation by the contact @f1/ formation 5B with disc 158 and the ^plug :is lifted'without rotation `thereof. During the second. amd third steps'itFig .5 to Fig. l6 and Fig. v6 to Fig. 7) the gear 21 is rotated approximately v1/4 turn to rotate plugA :I4 and vonly slight idle up and `down-.movement of plug .I4 occurs. During the fourth .step-(Eig. `'Tito Fig. 8) gear v21 is held against rotation by the contact of formation'51 with y.disc 58, and the plug is reseated without rotation. e The 1/4 turn .of gear 21 Will impart a 1/21 turn or full opening movement to plug I4 if screw 401beffully extended to hold lug 39 at 90 from lug 31, i. le., if screw 40 be so setas to eliminatefallflost motion between parts 21b and 21a. Bywhatever amount screw 40 is set to permit lost motion between parts 21o and 21a, by just that amount does the gear sector 21 rotate idly, with corresponding reduction in the amount'of opening rotation that is imparted to plug I4 as the parts move from the Fig. 5 position `to the Fig. 7 position. Thus the mechanism is one which can unseat the plug, turn it to fully open position and then .reseat it, but which additionally provides for reseating of the plug in any partially open position.

Closing of the valve -requires simply a, reverse Y movement of the operating handle 5I through 270? or a movement of the crank pin from the position K tothe position G in clookwisegdirection. Such reverse movement of the operating handle Causes a reversal in the sequence of voperation just described-for opening the valve.

' Fromthe foregoing it will be seen that the present invention-provides new, simple and eilicient mechanism for operating a. plug cock valve in such fashion that the valve can be moved from closed position to any selected degree of opening from a mere crack to fully open position, the valve element being unseated before the opening movement starts, and being reseated after the selected degree of opening movement has been accomplished.

Though the operating mechanism has been described in connection with a Valve utilizing a tapered plug, it will be evident that this operating mechanism can be used with valves of other construction.

In compliance with the patent statutes I have disclosed the best form in which I have contemplated applying my invention, but it will be realized that the invention may be embodied in other forms of mechanism which will achieve similar results.

What I claim is:

l. In `a valve organization including a body having a bore forming a seat, inlet and outlet passages intersecting said seat, a rotary sealing member cooperating with said seat and arranged on rotation to control ow from said inlet to said outlet passage and to be shifted axially in said bore, a Valve stem extending from said sealing member, and actuating means for said stem; said actuating means comprising: threaded sleeve means surrounding the stem and operable to unseat and reseat said sealing member; stem-rotating means associated with said stem and operable to rotate the stem; mechanism for rotating said sleeve means and moving said stem-rotating means in sequential relation to unseat said sealing member in a first predetermined rotative position, then in unseated condition rotate the sealing member to a second predetermined rotative position, andthen reseat the sealing member in said second rotative position, including a single operating member for operating said mechanism as aforesaid; the stem-rotating means being adjustable to eiect reseating of said sealing member in rotated positions between said first and second rotated position.

2. In a valve organization including a body having a bore forming a seat, inlet and outlet passages intersecting said seat, a rotary'sealing member cooperating with said seat and arranged on rotation to control flow from said inlet to said outlet passage and to be shifted axially in said bore, a valve stem extending from said sealing member, and actuating means for said stem; said actuating means comprising: threaded sleeve means surrounding the stem and operable t unseat and reseat said sealing member; rotating means associated with said stem and operable to rotate the stem; mechanism for rotating said sleeve means and moving said stem-rotating means in sequential relation to unseat said sealing member in a rst predetermined rotative position, then in unseated conditionrrotate the sealing member to a second predetermined rotative position, and then reseat the sealing member in said second rotative position; and a single operating member for operating said mechanism as aforesaid; the stem-rotating means being constructed and arranged to provide an adjustable amount of lost motion between the single operating member and the valve stem to effect reseating of said sealing member in rotated positions between said rst and second rotated position.

3. In a valve organization including a body having Va bore forming a seat, inlet and outlet passages intersecting said seat, a rotary sealing member cooperating with said seat and arranged on rotation to control flow from said inlet to said outlet passage and to be shifted axially in said bore, a valve Vstem extending from said sealing member and actuating means for said stem; said actuating means comprising: threaded sleeve means surrounding the stem and operable to unseat and reseat said sealing member; stemrotating means associated with said stem and operable to rotate the stem; mechanism for rotating said sleeve means and moving said stemrotating means in sequential relation to unseat said sealing member in a rst predetermined rotative position, then in unseated condition rotate the sealing member to a second predetermined rotative position, and then reseat the sealing member in said second rotative position; and a single operating lever for operating said mechanism as aforesaid; the stem-rotating means including a member rotatably mounted on the valve stem and capable of limited rotation thereon, the member being rotated through a predetermined angle by the single operating lever and being connected with the valve stem by a readily adjustable drive to produce anyrdesired lesser rotation of the valve stem.

WYLIE G. WILSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

